Changeflow GovPing Data Privacy & Cybersecurity Multiple Vulnerabilities in StrongSwan (RCE, Do...
Priority review Notice Added Final

Multiple Vulnerabilities in StrongSwan (RCE, DoS, Security Bypass)

Favicon for www.cert.ssi.gouv.fr CERT-FR Security Advisories
Published
Detected
Email

Summary

CERT-FR published advisory CERTFR-2026-AVI-0484 on April 23, 2026, disclosing seven vulnerabilities (CVE-2026-35328 through CVE-2026-35334) in strongSwan, an open-source IPsec VPN implementation. The vulnerabilities affect strongSwan versions prior to 6.0.6 and expose affected systems to remote code execution, remote denial of service, and security policy bypass. Organizations running strongSwan should immediately consult the vendor's security bulletins and apply available patches.

“De multiples vulnérabilités ont été découvertes dans strongSwan. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.”

— CERT-FR , verbatim from source
Published by CERT-FR on cert.ssi.gouv.fr . Detected, standardized, and enriched by GovPing. Review our methodology and editorial standards .

About this source

CERT-FR is the French government's national cybersecurity incident response team, run by the ANSSI. Their advisory feed publishes vulnerability disclosures, active exploitation warnings, and emergency patching guidance for software in widespread enterprise use: browsers, hypervisors, ERP systems, network equipment, file transfer products. Around 180 advisories a month. The advisories are written in French but cover the same vulnerability universe as CISA, NCSC-UK, BSI's CERT-Bund, and JPCERT, often hours earlier on European-headquartered vendors. Watch this if you patch enterprise software, run a SOC, write detection content, or track Schneider, Dassault, OVH, Atos, or any French-vendor advisory faster than English-language sources will surface it. GovPing publishes each advisory with the affected vendor, severity, and CERT-FR link.

View original document View source feed page

What changed

CERT-FR disclosed seven security vulnerabilities in strongSwan, an open-source IPsec VPN implementation widely used in enterprise and government network environments. The vulnerabilities, catalogued as CVE-2026-35328 through CVE-2026-35334 and disclosed by the vendor on April 22, 2026, affect all strongSwan versions prior to 6.0.6. Three risk categories were identified: remote code execution, remote denial of service, and security policy bypass.

Organizations operating strongSwan in any capacity should immediately identify the installed version and cross-reference against the affected range. Patches are available from the vendor's security bulletins; CERT-FR directs affected parties to consult those documents for remediation guidance. Given the severity of remote code execution risk, priority patching is warranted, particularly for systems accessible from untrusted networks.

What to do next

  1. Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs

Archived snapshot

Apr 23, 2026

GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.

Premier Ministre S.G.D.S.N

Agence nationale
de la sécurité des
systèmes d'information

Paris, le 23 avril 2026 N° CERTFR-2026-AVI-0484 Affaire suivie par: CERT-FR

Avis du CERT-FR

Objet: Multiples vulnérabilités dans strongSwan

Gestion du document

| Référence | CERTFR-2026-AVI-0484 |
| Titre | Multiples vulnérabilités dans strongSwan |
| Date de la première version | 23 avril 2026 |
| Date de la dernière version | 23 avril 2026 |
| Source(s) | Bulletin de sécurité StrongSwan cve-2026-35328 du 22 avril 2026
Bulletin de sécurité StrongSwan cve-2026-35329 du 22 avril 2026
Bulletin de sécurité StrongSwan cve-2026-35330 du 22 avril 2026
Bulletin de sécurité StrongSwan cve-2026-35331 du 22 avril 2026
Bulletin de sécurité StrongSwan cve-2026-35332 du 22 avril 2026
Bulletin de sécurité StrongSwan cve-2026-35333 du 22 avril 2026
Bulletin de sécurité StrongSwan cve-2026-35334 du 22 avril 2026 |
Une gestion de version détaillée se trouve à la fin de ce document.

Risques

  • Contournement de la politique de sécurité
  • Déni de service à distance
  • Exécution de code arbitraire à distance

Systèmes affectés

  • strongSwan versions antérieures à 6.0.6

Résumé

De multiples vulnérabilités ont été découvertes dans strongSwan. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Documentation

Gestion détaillée du document

  1. le 23 avril 2026 Version initiale

Related changes

Favicon for www.cert.ssi.gouv.fr Multiple Vulnerabilities in Stormshield Management Center, RCE
Priority review Apr 23, 2026 • CERT-FR Security Advisories • Data Privacy & Cybersecurity
Favicon for wid.cert-bund.de Linux Kernel Multiple Vulnerabilities Allow DoS, Security Bypass
Priority review Apr 23, 2026 • CERT-Bund Security Advisories • Data Privacy & Cybersecurity
Favicon for www.cert.ssi.gouv.fr Multiple Vulnerabilities in Google Chrome
Priority review Apr 23, 2026 • CERT-FR Security Advisories • Data Privacy & Cybersecurity

Get daily alerts for CERT-FR Security Advisories

Daily digest delivered to your inbox.

Free. Unsubscribe anytime.

Source

Favicon for www.cert.ssi.gouv.fr
CERT-FR Security Advisories cert.ssi.gouv.fr/avis
Data Privacy & Cybersecurity

About this page

What is GovPing?

Every important government, regulator, and court update from around the world. One place. Real-time. Free. Our mission

What's from the agency?

Source document text, dates, docket IDs, and authority are extracted directly from CERT-FR.

What's AI-generated?

The summary, classification, recommended actions, deadlines, and penalty information are AI-generated from the original text and may contain errors. Always verify against the source document.

Last updated

Press inquiries →

Classification

Agency
CERT-FR
Published
April 23rd, 2026
Instrument
Notice
Branch
Executive
Source language
fr
Legal weight
Non-binding
Stage
Final
Change scope
Substantive
Document ID
CERTFR-2026-AVI-0484

Who this affects

Applies to
Technology companies Government agencies
Industry sector
5112 Software & Technology
Activity scope
VPN server administration Network security patching
Threshold
strongSwan versions prior to 6.0.6
Geographic scope
France FR

Taxonomy

Primary area
Cybersecurity
Operational domain
IT Security
Compliance frameworks
NIST CSF
Topics
Data Privacy Sanctions

Browse Categories

Agriculture & Food Safety 79 AI Regulation 3 Banking & Finance 483 Consumer Protection 127 Courts & Legal 462 Data Privacy & Cybersecurity 144 Defense & National Security 53 Education 64 Energy 113 Environment 168 Gaming 2 Government & Legislation 499 Healthcare 15 Healthcare & Life Sciences 387 Immigration 11 Insurance 87 Labor & Employment 185 Pharma & Drug Safety 21 Professional Licensing 6 Real Estate & Housing 74 Securities & Markets 174 Tax 106 Telecom & Technology 54 Trade & Sanctions 160 Transportation 116

Get alerts for this source

We'll email you when CERT-FR Security Advisories publishes new changes.

Free. Unsubscribe anytime.

You're subscribed!